docs: def execution_environment():
      """A convenient bundling of the current execution context"""
      context = {}
      context['conf'] = config()
      if relation_id():
          context['reltype'] = relation_type()
          context['relid'] = relation_id()
          context['rel'] = relation_get()
      context['unit'] = local_unit()
      context['rels'] = relations()
      context['env'] = os.environ
      return context